Some medications can certainly do that to us @The-red-centaur One of the previous ones I was on 'helped' me put on a lot of weight. I am only half way through losing that again but starting to fit into some of my clothes again. It just adds to the negative self-image but it is preferable to the place I was in mentally.
Going to bed early sounds like a good idea. I will most likely be doing the same.
It is a shame you haven't done any painting since Christmas. It has been a couple of months since I have done any myself but being at work hasn't left me much time or energy to do any. I understand fully that you have to be in the right headspace and heartspace to paint.